Cross-head.



- E. P. DOUGHERTY, C. Ii. EMERSON & W. A. BE DELL.

GROSS HEAD.

APPLICATION FILED MAY 22, 1909.

' 933,634, Patented Sept. 7, 1909.

W: J I Wan/M. e a? mummy UNETED STATES orrrcn EDWARD P. DOUGHERTY, CLYNEL. EMERSON, AND WILLIAM A. BE DELL, 0F VAN BUREN, ARKANSAS.

CROSS-HEAD.

Specification of Letters Patent.

Patented Sept. 7, 1909.

Application filed may 22, 1909. Serial No. 497,782.

To all whom it may concern:

Be it known that we, EDWARD P. Docen- ERTY, CLYNE L. EMERSON, andWILLIAir A. BE DELL, citizens of the United States, residing at Van-Buren, in the county of Crawford and State of Arkansas, have inventednew and useful Improvements in Cross- Heads, of which the following is aspecificat1on.

Our invention pertains to cross-heads and more particularly to means forsecuring wrist pins in cross-heads; and it contemplates the provision ofsimple and strong means for securing a wrist pin in a cross-head in suchmanner that there is no liability of the pin being accidentallydisplaced, and yet when itis desired to remove the pin the same can beexpeditiously and easily accomplished.

With the foregoing in view, the invention will be fully understood fromthe following description and claims wheat-he same are read inconnection with the drawings, accompanying and forming partof thisspecification, in which:

Figure 1 is a side elevation of a cross-head constructed in accordancewith our invention. Fig. 2 is a transverse section taken in the planeindicated by the line 22 of Fig. 1. ig. 3 is a view, partly in elevationand partly in section, of the wrist pin removed from the cross-head.

Similar letters designate corresponding arts in all of the views of thedrawings, re-

erring to which: i

A. is the cross-head; B, the wrist pin; and C, the key for securing thepin in the crosshead and against casual displacement. The cross-head isprovided in its sides a with the alined transverse apertures 12 and 0,the latter of which is tapered inwardly to a slight extent, and at itsside adjacent said a erture 0 the cross-head has a lateral boss d inwhich are diametrically opposite apertures e.

As shown in Figs. 2 and 3, the wrist pin B is slightly reduced at itsforward end to snugly occupy the aperture 22 in the crosshead, and atits rear end said pin is provided with a tapered head f and adiametrical kerf g therein; the head 7 being of a size to tightly fit inthe aperture 0 of the cros's-hea The parts are assembled as best shownin Fig. 2, and the key C, which is tapered in conformity with theinclination of the bottom wall of the kerf g,,is placed in the apertureas of the boss cl afterwhich the nut i and the jam nut. are turned onthe threaded end h of the key. With the parts arranged as stated, itwill be manifest that there is no liability of any of the parts workingloose or being displaced. When, however, it is desired to disconnect themain rod (not shown) from the cross-head, such disconnection may bereadily accomplished,irrespective ofthe position in which the enginestands; it being simply necessary to remove the nuts and key from oneside of the cross-head and then displace the wrist pin by applying blowsto the end thereof adjacent the opposite side of the cross-head. It willalso be gathered from the foregoing that the cross-head as a whole issimple and compact in construction, and is well adapted to withstand theusage to which devicesof corresponding character are ordinarilysubjected.

Having described our invention, what we claim and desire to secure byLetters-Patent 1. The combination with a cross-head having sides andalined apertures therein and also having a lateral boss on one side,around the aperture therein, and diametrically op-- posite apertures insaid boss; of a wrist pin removably arranged in said apertures'of thecross-head sides and having a head disposed in the boss and also havinga diametrical kerf in said head and alined with the apertures of theboss, a tapered key removably arranged in the apertures of the boss andthe kerf of the pin head, and means on the reduced end of the key,removably securing the same in position.

2. The combination of a cross-head having sides in which are alinedapertures one of which is tapered inwardly and also having a boss on oneside surrounding the tapered aperture and diametrically oppositeapertures in said boss; of a wrist pin removably arranged in thecross-head and having a tapered head disposed in' the tapered apertureand the boss, and a diametrical kerf in the head, the inner wall ofwhich kerf is inclined, a tapered key removably arran ed in theapertures of the boss and the ker of the pin and having a reduced andthreaded end, and a nut on said end.

3. The combination with a cross-head having sides and alined aperturestherein and having a lateral boss on one side, around the aperturetherein, and diametrically opposite apertures in said boss; of a Wristin removably arranged in said apertures o the crosshead sides and havinga head dis osed in the boss and also havin a diametrical kerf insaid-head and aline with the apertures of the boss, and a key removablyarranged in the apertures of the boss and the kerf of the pin head.

In testimony whereof we have hereunto EDWARD P. DOUGHERTY. CLYNE L.EMERSON. WILLIAM A. BE DELL.

Witnesses J. A. SHIBLEY, H. W. HALLEY.

